Nozzle key
Nozzle
NC4+ Blue system
Replacing the air blast nozzle
The air blast nozzle can be replaced if it becomes damaged.
Identify the cause of the damage and rectify the problem before replacing the air blast nozzle.
Equipment required
• Nozzle replacement kit.
Supplied with:
• Nozzle key
• Nozzle assembly
• Washer
To replace the air blast nozzle
1. Switch off electrical power to the interface system.
2. Remove the air supply to the NC4+ Blue by setting the pressure regulator to 0 MPa (0 psi).
3. Remove the air supply to the air blast system.
4. Using the nozzle key, remove the nozzle from the NC4+ Blue (unscrew anticlockwise).
5. Fit the new nozzle to the NC4+ Blue system (for further information see the figure below).
Tighten to 2.0 Nm (1.47 lbf.ft.).
After replacing the air blast nozzle
6. Switch on electrical power to the interface unit (see “Applying electrical power to the interface unit”
on 3.8).
7. Restore the air supply to the NC4+ Blue and air blast and adjust the pressure (see “Setting the air
blast pressure” on 3.10).
4.7
Maintenance